The hood to this raincoat is a semi-rigid half-sphere of foam that can be worn like a rain helmet/ head-umbrella or flipped back to a vertical position to act as a sound-focusing hearing antenna.
-- JesusHChrist, Dec 11 2013

//half-sphere of foam// Would work better if the shape is parabolic and the surface is dense. +
-- csea, Dec 11 2013


and the award for "Suspect Surveillance Techniques" goes to ...
-- FlyingToaster, Dec 11 2013



random, halfbakery